Electric power system cascading failure blocking method based on active minimum generator tripping

A technology of cascading faults and power systems, applied in the direction of power network operating system integration, information technology support systems, electrical components, etc., to achieve the effect of ensuring safe recovery

Active Publication Date: 2021-04-20
CHONGQING UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A calculation method for the minimum shedding amount used to block cascading faults is proposed; at the same time, a verification method for the minimum shedding amount obtained by checking is proposed considering the power supply constraints, load capacity constraints, and balance node adjustment speed constraints; at the same time , in view of the situation that the minimum cut-off amount does not satisfy the constraints, a correction method for the minimum cut-off amount is proposed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric power system cascading failure blocking method based on active minimum generator tripping
  • Electric power system cascading failure blocking method based on active minimum generator tripping
  • Electric power system cascading failure blocking method based on active minimum generator tripping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0082] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0083] like figure 1As shown, the present invention discloses a method for blocking cascading faults in a power system based on active minimum cut-off, comprising the following steps:

[0084] S101. When the transmission line is overloaded, the synchronous generator node with the first power sensitivity ranking is used as the cut-off node, the load node with the first power sensitivity ranking is used as the load-cutting node, and the power sensitivity ranking is the kth power supply node. Balance nodes, calculate the minimum amount of power cut required to ensure the safe recovery of overloaded transmission lines; power sensitivity is sorted in descending order;

[0085] S102. Check whether the minimum cut-off amount satisfies the power supply capacity constraint, the load capacity constraint and the balance node power adjustment speed constraint; if so, re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an electric power system cascading failure blocking method based on active minimum generator tripping, which is used for solving the problem of electric power system cascading failure caused by line overload in the prior art. A calculation method of the minimum generator tripping amount for blocking cascading failures is provided; meanwhile, by considering a power constraint, a load capacity constraint and a balance node adjustment speed constraint, a verification method for verifying the minimum generator tripping amount is provided; meanwhile, aiming at the condition that the minimum generator tripping amount does not meet the constraints, the invention provides a correction method of the minimum generator tripping amount. According to the method, the power control capability of the power supply in the power system can be utilized to the maximum extent, the power of the overload power transmission line is rapidly recovered, and the generator tripping and load shedding power is reduced as much as possible, so that cascading failures of the power system are effectively blocked, the blocking cost is reduced, and the power system stability is improved.

Description

technical field [0001] The invention relates to the field of cascading fault control of power systems, in particular to a method for blocking cascading faults of power systems based on active minimum shutdown. Background technique [0002] In recent years, there have been many major power outages around the world, which are often caused by cascading failures. With the continuous expansion of the scale of my country's UHV interconnected power grid, once a cascading failure event occurs, it will inevitably cause heavy losses. Therefore, how to correctly and effectively control the risk of cascading failure is of great significance to ensure the safe and reliable operation of the power grid. Studies have shown that the power flow transfer and overload trip caused by random faults are an important factor to induce cascading failures. Control measures should be taken to eliminate overload and avoid the occurrence of cascading overload trips. [0003] Some researchers try to avo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/14H02J3/46H02H7/26
CPCY04S20/222Y02B70/3225
Inventor 欧阳金鑫龙晓轩
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap